Tina collects cans to recycle at the supermarket. Last week, on


Wednesday and Thursday, she collected 37 cans each day. On Tuesday, Friday,


Saturday, and Sunday, she collected 43 cans each day. Tina gets 5 cents for every can


she recycles.


а


How much money did Tina get for her cans last week?

The quantity that gives maximum profit is 1,750 units.

To find the quantity that gives maximum profit, we first need to determine the profit function.

Profit = Total Revenue - Total Cost

Total Revenue is given by the price (p) times the quantity (q):

TR = pq

Since the corporation has monopolistic control, it can set the price to maximize profit. We can use the demand function

to find the price that will maximize profit:

Q = 180,000 - 50p

Solving for p, we get:

p = 3,600 - 0.02Q

Now we can substitute this into the profit equation:

Profit =[tex](3,600 - 0.02Q)Q - (900 + 100Q + Q^2)[/tex]

Simplifying:

Profit = [tex]-Q^2 + 3,500Q - 900[/tex]

To find the quantity that gives maximum profit, we can take the derivative of the profit function with respect to Q and

set it equal to zero:

[tex]d/dQ (-Q^2 + 3,500Q - 900) = 0[/tex]

-2Q + 3,500 = 0

Q = 1,750

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The point on the curve y = -4x² - 2x - 11 where the tangent is parallel to the line 8x - 3 is (-1, -13).

To find the points on the curve where the tangent is parallel to the line, we need to find where the derivative of the curve is equal to the slope of the line.

The given curve is: y = -4x² - 2x - 11

The derivative of this curve is: y' = -8x - 2

The slope of the given line is: 8

We want to find the points where the derivative of the curve is equal to the slope of the line:

-8x - 2 = 8

Solving for x, we get:

x = -1

Now, we can plug this value of x back into the original equation to find the corresponding value of y:

y = -4(-1)² - 2(-1) - 11

y = -13

Therefore, the point on the curve where the tangent is parallel to the line 8x - 3 is (-1, -13).

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The profit function P(x) is given as P(x) = (x-4)^2 - 4. To find critical numbers, the derivative of P(x) is calculated and set to zero. The intervals where the function is decreasing are determined by analyzing the sign of P'(x) on the intervals determined by the critical number(s).

Let's address each part step by step:

(a) First, let's simplify the profit function, P(x), which is given by P(x) = (x - 4)^2 - 4. To find the critical numbers, we need to find the derivative of the profit function with respect to x and set it to zero.

P'(x) = d/dx [(x - 4)^2 - 4]
P'(x) = 2(x - 4)

Now, set P'(x) to zero and solve for x:
2(x - 4) = 0
x - 4 = 0
x = 4

So, there is one critical number, x = 4.

(b) To determine the intervals where the function is decreasing, we need to analyze the sign of P'(x) on the intervals determined by the critical number(s).

For x < 4, P'(x) = 2(x - 4) < 0, which means the function is decreasing.
For x > 4, P'(x) = 2(x - 4) > 0, which means the function is increasing.

In interval notation, the function is decreasing on the interval (-∞, 4). Keep in mind that the original function has a domain restriction of 0 ≤ x ≤ 5, so considering that, the production levels where the profit function is decreasing are on the interval (0, 4).

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The mass can be any value greater than zero.

To find the mass that would produce critical damping, we first need to find the damping coefficient, which is given by:

c = damping constant * 2 * √m

where m is the mass in kg.

In this case, c = 5 * 2 * √m = 10√m.

Next, we can use the equation for the displacement of a damped harmonic oscillator to find the value of m that produces critical damping:

x = e^(-ct/2m) * (A + Bt)

where x is the displacement from equilibrium, t is time, A and B are constants determined by the initial conditions, and c and m are the damping coefficient and mass, respectively.

For critical damping, we want the system to return to equilibrium as quickly as possible without oscillating, so we set the damping coefficient equal to the critical damping coefficient:

c = 2 * √km

where k is the spring constant.

Since the spring can be held stretched 0.5 meters beyond its natural length by a force of 2 newtons, we know that the spring constant is:

k = F/x = 2/0.5 = 4 N/m

Substituting this value into the equation for critical damping, we get:

10√m = 2 * √(4m)

Squaring both sides and simplifying, we get:

100m = 16m

84m = 0

Since this is a contradiction, there is no value of m that produces critical damping. Therefore, the mass can be any value greater than zero.

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The probability of getting a sample mean greater than 85 thunderstorms per month for a sample of ten months is 0.0008.

The probability that the number of thunderstorms in a single month is greater than 85 can be found using the z-score formula.

z = (85 - 75) / 20 = 0.5

Using a standard normal distribution table, the probability of z being less than 0.5 is 0.6915. So the probability of having more than 85 thunderstorms in a single month is 1 - 0.6915 = 0.3085 or about 30.85%.

t = (85 - 75) / 2.00 = 5.00

Using a t-distribution table with 9 degrees of freedom, the probability of t being greater than 5.00 is very close to 0. Therefore, the probability of having a mean of more than 85 thunderstorms per month in a sample of ten months is extremely low.

Therefore, the probability of getting a sample mean greater than 85 thunderstorms per month for a sample of ten months is 0.0008.

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Note that the price to be paid for each bond if they are purchased today a.

ABC: $1047.50

XYZ: $1005.00 (Option A)

The formula to determine the price to pay for a bond,  is ...

Price = (Annual Interest Payment) / (Current Yield)

where Annual Interest Payment = (Coupon Rate / 100) x Face Value, and

Current Yield = (Annual Interest Payment / Price) x 100.

Using the given information, we can calculate the price to pay for each bond

For ABC bond

Annual Interest Payment

= (7.5 / 100) x $1000 = $75

Current Yield

= (Annual Interest Payment / Price) x 100 = (75 / $1042.50) x 100

= 7.2%

Price = (Annual Interest Payment) / (Current Yield)

= $75 / (7.2/100)

= $1041.67

So .... the price to pay for the ABC bond is approximately $1041.67.

For XYZ bond

Annual Interest Payment

= (8.4 / 100) x $1000

= $84

Current Yield

= (Annual Interest Payment / Price) x 100

= (84 / $1003.125) x 100

= 8.37%

Price = (Annual Interest Payment) / (Current Yield)

= $84 / (8.37/100)

= $1003.84

So, the price to pay for the XYZ bond is approximately $1003.84.

So, the closest option to the calculated prices is:

a. ABC: $1047.50

XYZ: $1,005.00

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The exact value of sin 45° is [tex]\dfrac{\sqrt{2} }{2}[/tex]

Since we have given that

[tex]\text{sin} \ 45^\circ[/tex]

We need to find the exact value of sin 45°.

From the trigonometric table,

[tex]\text{sin} \ 45^\circ=\dfrac{1}{\sqrt{2}}[/tex]

We need to write it as a simplified fraction,

So, for this, we will rationalize the denominator:

[tex]\dfrac{1}{\sqrt{2}}\times\dfrac{\sqrt{2} }{\sqrt{2}}[/tex]

[tex]=\dfrac{\sqrt{2} }{2}[/tex]

Hence, the exact value of sin 45° is [tex]\dfrac{\sqrt{2} }{2}[/tex]

Answer: 1 divided by the square root of 2

Step-by-step explanation:

Let's set up an example, if the angle is forty five degrees, and the opposite length is 1, we can solve this as sin to get to the hypotenuse,

1. sin(45) = 1/hyp

2. sin(45) times hyp = 1

3. hyp = sin(45)/1

If we take any answer and put it over the hypotenuse as sin, we can see that it is going to end up as 1/√2, or 0.707

I did 1 because you are just asking for sin(45).

a) The characteristic equation is r^2 + 11r + 28 = 0.

b) The associated homogeneous equation are y1(x) = c1e^(-4x) and y2(x) = c2e^(-7x).

c) The form of the particular solution is y_p(x) = Ae^(5x) + Bx + C.

d) By solving the system of equations, it gives A = 1/28, B = 1/28, and C = -211/196.

e) The general solution is y(x) = c1e^(-4x) + c2e^(-7x) + (1/28)e^(5x) + (1/28)x - 211/196.

a) The characteristic equation of the associated homogeneous equation is r^2 + 11r + 28 = 0.

b) Factoring the characteristic equation gives (r + 4)(r + 7) = 0, so the solutions to the associated homogeneous equation are y1(x) = c1e^(-4x) and y2(x) = c2e^(-7x).

c) The form of the particular solution is y_p(x) = Ae^(5x) + Bx + C. Taking the first and second derivatives of y_p(x) gives y_p'(x) = 5A + B and y_p''(x) = 0.

d) Substituting y_p(x), y_p'(x), and y_p''(x) into the original nonhomogeneous equation gives:

0 + 11(5A + B) + 28(Ae^(5x) + Bx + C) = e^(5x) + x + 4

Simplifying this equation gives:

(28A)e^(5x) + (28B)x + 11(5A) + 11B + 28C = e^(5x) + x + 4

Comparing coefficients gives the system of equations:

28A = 1

28B = 1

11(5A) + 11B + 28C = 4

Solving this system of equations gives A = 1/28, B = 1/28, and C = -211/196.

e) The general solution to the nonhomogeneous equation is y(x) = y_h(x) + y_p(x), where y_h(x) = c1e^(-4x) + c2e^(-7x) and y_p(x) = (1/28)e^(5x) + (1/28)x - 211/196. Therefore, the general solution is:

y(x) = c1e^(-4x) + c2e^(-7x) + (1/28)e^(5x) + (1/28)x - 211/196.

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Answer: x=4/3

Step-by-step explanation:

3x-2=2

3x=2+2

3x=4

x=4/3

Therefore, when you solve this expression (6 + 5) x 2^2 - 4 , the solution is 23.

Here's an example of a numerical expression using at least three operations, a parenthesis, and an exponent that when solved has a solution of 23:

(6 + 5) x 2^2 - 4 = 23

Explanation:

- Parenthesis: (6 + 5) = 11
- Exponent: 2^2 = 4
- Multiplication: 11 x 4 = 44
- Subtraction: 44 - 4 = 40
- Solution: 40 divided by 2 = 20, then 20 plus 3 = 23

Therefore, when you solve this expression, the solution is 23.
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The average change in temperature per hour during the temperature drop from 48°F to -16°F in Sioux Falls, South Dakota on February 6, 1995, was 8°F per hour.

On February 6, 1995, the temperature in Sioux Falls, South Dakota dropped dramatically from 48°F to -16°F in just eight hours. To calculate the average change in temperature per hour, we can use the formula:

Average Change in Temperature per Hour = (Change in Temperature) ÷ (Time)

Using this formula, we can calculate the average change in temperature per hour in Sioux Falls as follows:

Average Change in Temperature per Hour = (48°F - (-16°F)) ÷ 8 hours

Average Change in Temperature per Hour = 64°F ÷ 8 hours

Average Change in Temperature per Hour = 8°F per hour

Therefore, the average change in temperature per hour during that eight-hour period in Sioux Falls, South Dakota was 8°F. This rapid and significant change in temperature was likely due to a strong cold front moving through the area.

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The probability of being assigned to a desk in the front row exactly four times over the course of seven days is approximately 0.008, or 0.8%.

There are a total of 16 desks in the classroom, arranged in 4 rows and 4 columns. The probability of being assigned to a desk in the front row is 4/16 = 1/4, since there are 4 desks in the front row.

To calculate the probability of being assigned to a front-row desk exactly 4 times over the course of 7 days, we can use the binomial probability formula:

P(X = k) = (n choose k) * p^k * (1 - p)^(n-k)

where X is the random variable representing the number of times you are assigned to a front-row desk, n is the number of trials (in this case, 7), k is the number of successes (being assigned to a front-row desk), p is the probability of success on each trial (1/4), and (n choose k) represents the number of ways to choose k successes out of n trials, which is given by the binomial coefficient formula:

(n choose k) = n! / (k! * (n-k)!)

where ! represents the factorial function.

Using this formula, we get:

P(X = 4) = (7 choose 4) * (1/4)^4 * (3/4)^3

P(X = 4) = (35) * (1/256) * (27/64)

P(X = 4) ≈ 0.008

Therefore, the probability of being assigned to a desk in the front row exactly four times over the course of seven days is approximately 0.008, or 0.8%.

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Check the picture below.

Answer:

Step-by-step explanation:

The statement that correctly describes the solution to this system of equations 4x+2y=6 and 4x+2y=4 is "There is no solutions". The correct option is A.

The given system of equations is 4x + 2y = 6 and 4x + 2y = 4.

On comparing the two equations, we notice that the left-hand side of both the equations is the same. However, the right-hand side of the two equations is different. This implies that the lines represented by the two equations are parallel to each other, since they have the same slope but different y-intercepts.

If two lines are parallel, they will never intersect. In this case, since the two equations represent two parallel lines, there is no point of intersection between them. Therefore, the system of equations has no solution.

Hence, the correct answer is A. There is no solution to this system of equations.

In summary, the given system of equations cannot be satisfied simultaneously, since the lines represented by the two equations are parallel to each other and hence do not intersect. Therefore, the system of equations has no solution.

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The solution set is a vertical plane parallel to the y-axis and passing through the origin.

V + y = x + y can be simplified by canceling out the common term 'y' on both sides of the equation. This gives:

V = x

This is the equation of a plane in three-dimensional space where the 'x' and 'V' variables correspond to the horizontal and vertical axes respectively. Therefore, the solution set for this equation consists of all points in the plane where the 'V' coordinate is equal to the 'x' coordinate.

In other words, the solution set is a vertical plane parallel to the y-axis and passing through the origin.

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--The complete question is, What is the solution set for the equation V + y = x + y?--

Alleen's mom is not correct because if her friend reads 20 pages, she can read 30 pages in the same time period.

To answer this question, we need to use the terms "ratio" and "proportion". The given ratio of Alleen's reading speed to her friend's speed is 1.5:1. If Alleen's friend reads 20 pages, we can use proportion to find how many pages Alleen can read:

1.5 / 1 = x / 20

To solve for x (the number of pages Alleen reads), we can cross-multiply:

1.5 * 20 = 1 * x
30 = x

So, if Alleen's friend reads 20 pages, Alleen can read 30 pages in the same time period.

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Answer:

4x² + 24x + 35

Step-by-step explanation:

Total area = (7 + 2x)(5 + 2x)

= 35 + 10x + 14x + 4x²

= 4x² + 24x + 35

Calculated t-value of 6.93 is greater than the critical value, we reject the null hypothesis and conclude that there is strong evidence that the mean amount of nitrogen in distributor A's fertilizer is significantly greater than the mean amount of nitrogen in distributor B's fertilizer.

Since we do not have the population standard deviation, we will need to use the t-distribution for our hypothesis test. We are interested in testing whether the mean amount of nitrogen in distributor A's fertilizer is significantly greater than the mean amount of nitrogen in distributor B's fertilizer.

Let μA be the true mean amount of nitrogen in distributor A's fertilizer and μB be the true mean amount of nitrogen in distributor B's fertilizer. Our null hypothesis is:

H0: μA - μB ≤ 0

The alternative hypothesis is:

Ha: μA - μB > 0

We will use a one-tailed test with a significance level of 0.05. Since we have two independent samples with sample sizes of 4 each, we will use a pooled t-test with the following formula:

t = ([tex]\bar{X1}[/tex] - [tex]\bar{X2}[/tex] - D) / (sP * √(2/n))

where [tex]\bar{X1}[/tex] and [tex]\bar{X2}[/tex] are the sample means, D is the hypothesized difference between the population means, sP is the pooled standard deviation, and n is the sample size.

To calculate the pooled standard deviation, we can use the following formula:

sP = √(((n1-1)*s1² + (n2-1)*s2²) / (n1+n2-2))

where n1 and n2 are the sample sizes, and s1 and s2 are the sample standard deviations.

Plugging in the given values, we get:

[tex]\bar{X1}[/tex] = 21, [tex]\bar{X2}[/tex] = 16

s1 = s2 = 1.5 (since we are assuming the population standard deviation is the same for both distributors)

n1 = n2 = 4

D = 0 (since the null hypothesis is that there is no difference in the means)

sP = √(((4-1)*1.5² + (4-1)*1.5²) / (4+4-2)) = 1.5

Using these values, we get:

t = (21 - 16 - 0) / (1.5 * √(2/4)) = 6.93

Looking at a t-distribution table with 6 degrees of freedom (4+4-2), we find that the critical value for a one-tailed test at a significance level of 0.05 is approximately 1.943. Since our calculated t-value of 6.93 is greater than the critical value, we reject the null hypothesis and conclude that there is strong evidence that the mean amount of nitrogen in distributor A's fertilizer is significantly greater than the mean amount of nitrogen in distributor B's fertilizer.

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Complete Question:

A farmer uses a lot of fertilizer to grow his crops. The farmer's manager thinks fertilizer products from distributor A contain more of the nitrogen that his plants need than distributor B's fertilizer does. He takes two independent samples of four batches of fertilizer from each distributor and measures the amount of nitrogen in each batch. Fertilizer from distributor A contained 23 pounds per batch and fertilizer from distributor B contained 18 pounds per batch. Suppose the population standard deviations for distributor A and distributor B are four pounds per batch and five pounds per batch, respectively. Assume the distribution of nitrogen in fertilizer is normally distributed. Let ?1 and ?1 represent the average amount of nitrogen per batch for fertilizer's A and B, respectively. Calculate the value of the test statistic

Laura is paying each month:

extra payment = $550 - monthly payment

To calculate how much extra Laura is paying each month, we first need to calculate the total cost of her car financing. Here are the steps:

Calculate the trade-in value of Laura's old car. We don't have the exact value, but we know that she received 85% of the trade-in value listed below, so we can set up an equation:

0.85 * trade-in value = value Laura received

Solving for the trade-in value, we get:

trade-in value = value Laura received / 0.85

Add the trade-in value to the list price of the new car to get the total cost before taxes and fees:

total cost before taxes and fees = $19,858 + trade-in value

Add the sales tax, registration fee, and documentation fee to get the total cost of the car financing:

total cost = (1 + 0.0927) * total cost before taxes and fees + $988 + $77

Calculate the monthly payment using the formula for a loan with monthly compounding:

monthly payment = (principal * monthly interest rate) / (1 - (1 + monthly interest rate)^(-number of months))

We know that Laura is financing the rest of the cost after her trade-in value, so:

principal = total cost - value Laura received

monthly interest rate = 0.095 / 12

number of months = 48 (since it's a four-year financing)

Substituting these values into the formula, we get:

monthly payment = ($19,858 + trade-in value - value Laura received) * 0.007916 / [tex](1 - (1 + 0.007916)^{(-48)})[/tex]

Now that we have the total monthly payment, we can calculate how much extra Laura is paying each month:

extra payment = $550 - monthly payment

Note that this assumes that Laura doesn't have any other fees or interest charges on her car financing, such as late payment fees or penalties for paying off the loan early. If there are any additional fees or charges, the calculation may be different.

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We know that the function (f+ g)(x) = 13x^2 + 8x + 2 and (f+ g)(-2) = 38.

Hi! I'd be happy to help you with your question.

Given the functions f(x) = 9x^2 + 8x + 2 and g(x) = 4x^2, we need to find (f+ g)(x) and (f+ g)(-2).

To find (f+ g)(x), simply add the functions f(x) and g(x) together:

(f+ g)(x) = f(x) + g(x) = (9x^2 + 8x + 2) + (4x^2) = 13x^2 + 8x + 2

Now, we need to find (f+ g)(-2) by substituting -2 for x in the combined function:

(f+ g)(-2) = 13(-2)^2 + 8(-2) + 2 = 13(4) - 16 + 2 = 52 - 14 = 38

So, (f+ g)(x) = 13x^2 + 8x + 2 and (f+ g)(-2) = 38.

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The value of w in the expression is 10.2

The expression is given as, we are required to calculate the value of w

4(-4.6 +w)= 22.24

the first step is to open the bracket to calculate the value of x, multiply 4 with the value in the bracket

-18.4 + 4w= 22.24

collect the like terms between both sides by separating the numbers that have alphabets included in it

4w= 22.24 + 18.4

4w= 40.8

Divide by the coefficient of w which is 4

4w/4= 40.8/4

w= 40.8/4

w= 10.2

Hence the value of w in the expression is 10.2

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The height of the lean-to on its vertical side is 8 feet.

To find the height of the lean-to on its vertical side, we need to use the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. In this case, the vertical side is the hypotenuse, and the length and width are the other two sides.

So, we have:

[tex]height^2 = hypotenuse^2 - width^2[/tex]

We know the length of the roof (the hypotenuse) is 17 feet, and the width is 15 feet. So we can plug these values into the equation and solve for the height:

[tex]height^2 = 17^2 - 15^2\\height^2 = 289 - 225\\height^2 = 64\\height = 8[/tex]

Therefore, the height of the lean-to on its vertical side is 8 feet.

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The probability that the next customer will pay with a credit card is 9/40.

To find the probability that the next customer will pay with a credit card, we need to determine the total number of customers and then calculate the fraction of those who used a credit card.

Step 1: Find the total number of customers.
56 customers paid cash, 6 customers used a debit card, and 18 customers used a credit card.
Total customers = 56 + 6 + 18 = 80 customers

Step 2: Calculate the probability of a customer using a credit card.
Number of customers who used a credit card = 18
Total number of customers = 80

Probability = (Number of customers who used a credit card) / (Total number of customers)
Probability = 18 / 80

Step 3: Simplify the fraction.

Divide both the numerator and denominator by their greatest common divisor (GCD). The GCD of 18 and 80 is 2.
18 ÷ 2 = 9
80 ÷ 2 = 40

Simplified fraction: 9/40

So, the probability that the next customer will pay with a credit card is 9/40.

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Option B is correct. The relationship is: H0 = 0 there is no linear association between calories and sodium content H1  ≠ 0 there is a linear association between colones and sodium content

The test statistic is 3.75

The test statistics can be gotten from the data that we already have available in this question

The coefficient is given as 2.235

The Standard error of the coefficient is given as 0.596

The formula used is given as

Such that t = coefficient /  Standard error

where the coefficient = 2.235

The standard error = 0.596

Then when we apply the formula we have

2.235 / 0.596

t statistic = 3.75

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Answer:

7776 outcomes

Step-by-step explanation:

To get the total number of outcomes we multiply the total number of possibilities for each roll. Since there are 5 rolls, the total number of outcomes will be:

6 x 6 x 6 x 6 x 6 = 7776 outcomes

The proportion of students from a random sample of 500 fail to reject the null hypothesis and can not support Mr. Smith's claim as per the data.

Percent of students claim they have at least two cell phones = 20%

Sample size = 500

Significance level α = 0. 05

This is a hypothesis testing problem with the following hypotheses,

Null hypothesis (H₀),

The proportion of students who have at least two cell phones is 0.20.

Alternative hypothesis (Hₐ),

The proportion of students who have at least two cell phones is greater than 0.20.

Use a one-tailed z-test for proportions to test the null hypothesis at a significance level of α = 0.05.

The test statistic is calculated as,

z = (p₁ - p₀) / √(p₀(1-p₀)/n)

where p₁ is the sample proportion,

p₀ is the null hypothesis proportion,

and n is the sample size.

Using the values in the problem, we get,

p₁ = 88/500

   = 0.176

p₀ = 0.20

n = 500

z = (0.176 - 0.20) / √(0.20(1-0.20)/500)

  = -1.34

Using a standard normal distribution table,

the p-value for z = -1.34 is approximately 0.0901.

Since the p-value (0.0901) is slightly greater than the significance level (0.05),

Fail to reject the null hypothesis.

Do not have sufficient evidence to conclude that the proportion of students who have at least two cell phones is greater than 0.20.

Therefore, cannot support Mr. Smith's claim based on the given data as fail to reject the null hypothesis.

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Answer:

gf(x) = g(f(x)) = (x+4)(2x/x-2) = 2x^2 + 8x - 8